I wouldnt trust anybody but myself and my own research, but i would maybe take some profits. =)
25% of profitt from all coins to new coins you strongly believe in - then let the market repeat itself.
600k in crypto is quite a huge profit, but I dont think it is a good reason to quit. If I was the one, I wouldnt quit immediately, I will simply withdraw the profit Ive made so far and start afresh and make more money. #600k is even a small amount of money compared to what Im seeing people make from Bitcoin. There are people making millions of dollars from this, but dont be greedy lol.